pgsql: Doc: improve description of which role runs a trigger.

Doc: improve description of which role runs a trigger.

Refine wording from commit 01463e1cc.

Author: Noah Misch <noah@leadboat.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/20250605163441.2f.nmisch@google.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/c37be39a74b25cc9c7b052ddae43061a6a2c6019

Modified Files
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doc/src/sgml/trigger.sgml | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)